diff --git a/tests/data/draft/jane-austen_unknown-novel/src/epub/css/core.css b/tests/data/draft/jane-austen_unknown-novel/src/epub/css/core.css
index 7d125bad..3054652d 100644
--- a/tests/data/draft/jane-austen_unknown-novel/src/epub/css/core.css
+++ b/tests/data/draft/jane-austen_unknown-novel/src/epub/css/core.css
@@ -45,6 +45,32 @@ hgroup{
 	text-align: center;
 }
 
+/* simulate h3 in an hgroup */
+hgroup h2 + p{
+	font-size: 1.17em;
+}
+
+/* simulate h4 in an hgroup */
+hgroup h2 + p + p,
+hgroup h3 + p{
+	font-size: 1em;
+}
+
+/* simulate h5 in an hgroup */
+hgroup h2 + p + p + p,
+hgroup h3 + p + p,
+hgroup h4 + p{
+	font-size: .83em;
+}
+
+/* simulate h6 in an hgroup */
+hgroup h2 + p + p + p + p,
+hgroup h3 + p + p + p,
+hgroup h4 + p + p,
+hgroup h5 + p{
+	font-size: .67em;
+}
+
 hgroup > *{
 	font-weight: normal;
 	margin: 0;